Samsung unveils sleek new Galaxy phones to take on Apple

Samsung Electronics Co Ltd unveiled its latest Galaxy S smartphones featuring a slim body made from aircraft-grade metal, in a bid to reclaim the throne of undisputed global smartphone leader from Apple Inc.

Designed from scratch in an operation dubbed "Project Zero", the Galaxy S6 and its curved-edges variant are critical for Samsung's plans to reverse plunging smartphone revenues that led to its first annual earnings fall in three years in 2014.

By some estimates, Apple surpassed Samsung as the world's biggest smartphone maker late last year, selling a record 74.5 million iPhones in the December quarter on the back of the success of its big-screen iPhone 6 and 6 Plus.

Samsung's previous flagship Galaxy S5 was outsold in its second full month of global sales by Apple's older iPhone 5S, according to researcher Counterpoint.

The South Korean giant begins its fight-back on April 10 when the revamped Galaxy phones, unveiled at the Mobile World Congress in Barcelona on Sunday, hit the market in one of the most important product launches in the company's history.

"We listen to our customers and we learn from our missteps," J.K. Shin, Samsung's president and chief executive told a packed hall in Barcelona's convention center.

"I may not be the best public speaker. That is because my first language is engineering," he said.

Samsung is yet to disclose pricing or where the phones will appear first but said on Sunday that the phone will go on sale in 20 countries.

Stand-out features include casing made from light-weight metal used in airplanes, a step up from the plastic that disappointed many critics of the S5, and Corning Inc's Gorilla Glass on both front and back.

The Galaxy S6 upgrades the previous version's camera and screen, and strips out many of Samsung's unpopular in-house software apps that infuriated users by gobbling memory. It and the Galaxy S6 Edge will also be powered by Samsung's new 64-bit, 14-nanometer Exynos processors, analysts said.

"This offers the promise of delivering better overall margins for Samsung and, in time, differentiated performance from rivals, as Apple has achieved" with their own chip used in iPhones, said Ian Fogg, an analyst at IHS Technology.

"But it's a high-risk, high-reward strategy," he added.

In its previous Galaxy phones Samsung used a processor from Qualcomm.

The phones are also the first from Samsung to support wireless charging as a standard feature. In another departure, they have non-removable batteries to make them slimmer. To compensate for the lack of interchangeable batteries, Samsung says a 10-minute charge by cord gives four hours of power.

Samsung is also touting the Galaxy S6's compatibility with a new mobile payments system it is preparing to launch in the United States and South Korea in the second half of this year, using the technology of recently acquired startup LoopPay.

The system, in partnership with major U.S. banks and credit card companies including Visa and MasterCard, will allow users to make mobile payments through magnetic strip-card readers without an external accessory needed for other models.

The rival Apple Pay system, launched in the United States in September and rapidly winning retailer support, requires merchants to install near-field card readers, limiting its reach as contactless credit cards have been slow to take off there.

The new Samsung flagships will also come with free two-year, 115-gigabyte cloud storage through Microsoft Corp's OneDrive, suggesting improved relations between the firms after they settled a patent dispute last month.